Automatic Iris Adjustment - Sony DNW-7 Maintenance Manual

6-20. Automatic Iris Adjustment

Preparation
. On the setting menu, set as follows.
PAGE : LEVEL 7
ITEM : TEST OUT
. OUTPUT/DCC switch (inside panel)
. Shoot a gray-scale chart (16:9) in the full underscan's
picture frame.
. Lens IRIS
AUTO
Adjustment procedure
Test point: TEST OUT connector
1. On the setting menu, adjust as follows.
PAGE : LEVEL 9
ITEM : IRIS MODE
Spec. : Set the automatic iris operation mode
depending on the application.
Automatic iris operation mode setting can be done
from the average level to peak-to-peak level of the
video signal.
IRIS MODE = MIN
IRIS MODE = MAX
2. On the setting menu, adjust as follows.
PAGE : LEVEL 9
ITEM : IRIS SET
: A = 100 ± 2 IRE (NTSC)
Spec.
A = 700 ±14 mV (PAL)
3. On the setting menu, set as follows.
PAGE : LEVEL 9
ITEM : IRIS WEIGHT
4. Shoot a avoid working area of auto iris in the white
window chart?
5. On the setting menu, adjust as follows.
PAGE : LEVEL 9
ITEM : IRIS WEIGHT
Spec. : Increment the IRIS WEIGHT value
until the lens iris is open.
DNW-7/90/90WS
16:9 mode
ENC
CAM/ON
peak-to-peak level
average level
A
0 (MIN)
6. On the setting menu, adjust as follows.
PAGE : LEVEL 9
ITEM : IRIS SPEED (Factory setting: 0)
Spec. : Set to the desired operation speed of
auto iris.
6-20. Automatic Iris Adjustment
6-15